4bar and shock mount location on birdcage opinion

Quote:

Originally Posted by racinlm

Just wondering what people's opinions are on trailing arm locations on the birdcage:
- LR upper hi/low on birdcage: this is still our go to (half index)when there is a tight strip of bite on the bottom.
- RR upper hi/low on birdcage:
- LR lower hi/low on birdcage:
- RR lower hi/low on birdcage:
- RR shock closer or further from center of axle:
- LR shock closer or further from center of axle:
There is always info on raising or lowering bars on the chassis but I rarely see this discussed..
Thanks

If you are asking what it does, there is no opinion there.

Lr top down = more steer, more thrust, softer wheel rate. Makes car rotate more. Can drive harder, depending on other parts of setup.
Lr bottom down = less steer, more thrust into the top bar, softer wheel rate. Tighter in general
RR top down = more steer, more thrust, increase wheel rate. Makes car very free on throttle.
RR bottom up = decrease steer, remove thrust from top bar, increase wheel rate. Tightens entry. Can loosen exit by making car too RR dominant.

Lr shock away from axle = magnifies loading from index. Tighten exit. Can loosen entry.

RR shock away from axle = magnifies loading from index. Tightens entry. Can loosen exit.